The first step is to make an incision in the trunk, then they strip off a narrow bit of bark below the hole, so as to make a receptacle in which the milky juice, the _spuma pinguis_ of Pliny, can lodge and harden.

The first sense is seen here and at _Tr_ I i 39, _EP_ I v 13, and at _Tr_ V i 71 'ipse nec emendo, sed ut hic _deducta_ legantur', and the second at _Ecl_ VI 4-5 'pastorem, Tityre, pinguis/pascere oportet ouis, _deductum_ dicere carmen', where _deductum ... carmen_ represents the [Greek: Mousan ... leptaleên] of Callimachus _Aetia_ I 24; Servius comments on the metaphor from spinning.